Wrench.



' R. A. MONTGOMERY.

WRENCH.

APPLICATION IILED'A1R.17,1909.

961 515 Patented June M1910.

WITNESSES L l/VVE/VTOR B01201! A? W071i family ATTOR/VE Y8 srm a icingWRENCH.

Specification of Letters Patent. 7 Application filed April 17,1909.Serial no. 490,476.

Patented June 1%, i911).

To all whom it may concern:

Be it known that 1, ROBERT A. Monr- GOMERY, a subject of the King ofGreat Britain, and a resident of Indiana, in the county of Indiana-andState of Pennsylvania, have invented a new 'and Improved Wrench, ofwhich the following is a full, clear, and exact description.

lhe invention is an improvement in internal wrenches, more especiallyfor radiator valves, and has in View a tool presenting a number of suchwrenches of varying size, each wrench being stepped from the adjoiningwrench, and the several Wrenches decreasing in size point of the tool,the outer edges of the wrenches preferably, though not necessarily,

presenting cutting edges, adap ing the tool 1 i to be also used asreanier.

toward the inner end or portion of the bodyof the tool a eitherintegrally or separately attached and consists of a square or otherangular wrenchengaging portion 7 adjacent to the tool body, and areduced extremity 8 having in its end a socket wrench 9. Atdiametrically opposite points the wrench-engaging portion 7 of the shankis provided with threaded recesses 10, which serve to attach handles, asindicated in dotted outline in Fig. l, in operating thetool, or thehandles may be dispensed with and a wrench applied directly to theangular portion Z in using the tool as either a rcanier or wre .ch.

A disk 10 the junction of the shank end tool body reinforces theconnection hetwee e and rests on "I he LG which it is rigidly join J theblades together and Reference is to he had to the accompanyf Pffivtnilthe 5; mg drawings a part or this specii V ea fication, in which similarthe views.

l is a side view of central vertical section; Fig. :2 is an inner endview of the tool; and Fig. is a cross section of the tool on the line3--3 oi? Fig i, on an enlarged scale.

The body of the tool is composed number of blades 5 radiating "5mm a mencentral stem to which they are grally throughout their length,

of a

commice- The shoulders formed at the edges of i the several blades,prererably incline inwardly toward the point of the tool in order that;a bur may be easily out from the end of a pi e in inserting the nextlarger portion of t e reamer. "At the inner and enlarged characters oi?reference indicate corresponding parts i". K

the tool partly 1 formed or otherwise rigidly connected blade has astepped outer cutting tour of these blades g being shown arranged ninetydegrees apart, s

a one too-i is especially usefu hich work, as a r o the tail-piece oisizes the blades or .e internal projections prov .inec'tion with thesepipe fittings, when the fitting screwed on or oil the radiator con- Thetool as a manner is especially or'cutting the burs from. the ends onesize pipes, after which the next larger portion of the tool is easilinserted.

to .ing thus described my invention,

as new and desire to'secure by Letters ens tool comprising a centralstern haw blades radiating therefrom, the blades having stepped outercutting edges forming a number of wrenches successively increasin v sizefrom the outer end oi": the tool tower the inner end or shank of thetool, with each 1-31'3h. of approximately uniform diameter throughoutits length.

A tool wrnprising a central stem having blades radiating therefrom andwith the stem substantially their full len Lh, the blades nccessivelydecreasing in Width from the inner to the outer end of the tool asuccession of internal. wrenches, said the inner end of the blades toprovide a shank havin a reinforcing disk rigid and with the inner endsof the 5. tool having blades radiating from a stein hein" extended he'ond shank is common longitudinal axis, the blades tapering incross-section, with the thickest por-.

tion of each blade arranged adjacent to said axis, said blades havingstepped outer edges forming a succession of internal wrenchessuccessively increasing in size from the outer end of the tool inwardly.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ROBERT A. MONTGOMERY.

Witnesses: 1

JOHN F. STEETLE, CLYDE R. THAMPSAN.

